package com.atguigu.gulimall.product.config;

import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.plugins.pagination.optimize.JsqlParserCountOptimize;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
@EnableTransactionManagement
@MapperScan("com.atguigu.gulimall.product.dao")
public class MybatisConfig {

    //引入分页插件
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
        //设置请求的页面大于最大页后操作，true调回到首页，false继续请求，默认false
        paginationInterceptor.setOverflow(true);
        //设置最大单页限制数量，默认500条，-1不受限制
        paginationInterceptor.setLimit(1000);
        //开启count的join优化，只针对部分left join
        paginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));
        return paginationInterceptor;
    }

}
